Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Schedule of Employee Benefit Plans

The components of net period benefit cost for the three and six months ended June 30, 2020 and 2019, respectively, are as follows:

	Three Months Ended June 30, 2020
	Retirement Income Plan		National Service-Related Pension Plan		Other Post-Retirement Benefits		Superannuation		Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	—	$	—	$	—	$	14	$	14
Interest cost	316		280		3		6		605
Expected return on plan assets	(501)		(367)		—		(15)		(883)
Amortization of net loss	254		151		—		—		405
Amortization of prior service cost	—		—		—		7		7
Net pension benefit cost	$	69	$	64	$	3	$	12	$	148

	Three Months Ended June 30, 2019
	Retirement Income Plan		National Service-Related Pension Plan		Other Post-Retirement Benefits		Superannuation		Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	—	$	—	$	—	$	18	$	18
Interest cost	397		311		6		13		727
Expected return on plan assets	(440)		(294)		—		(19)		(753)
Amortization of net loss	377		141		(1)		—		517
Amortization of prior service cost	—		—		—		9		9
Net pension benefit cost	$	334	$	158	$	5	$	21	$	518

	Six Months Ended June 30, 2020
	Retirement Income Plan		National Service-Related Pension Plan		Other Post-Retirement Benefits		Superannuation		Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	—	$	—	$	—	$	28	$	28
Interest cost	631		559		7		12		1,209
Expected return on plan assets	(1,001)		(733)		—		(31)		(1,765)
Amortization of net loss	508		303		—		—		811
Amortization of prior service cost	—		—		—		15		15
Net pension benefit cost	$	138	$	129	$	7	$	24	$	298

	Six Months Ended June 30, 2019
	Retirement Income Plan		National Service-Related Pension Plan		Other Post-Retirement Benefits		Superannuation		Total
Components of net periodic benefit cost:	(In thousands)
Service cost	$	—	$	—	$	—	$	34	$	34
Interest cost	795		622		12		25		1,454
Expected return on plan assets	(880)		(588)		—		(37)		(1,505)
Amortization of net loss	754		282		(2)		—		1,034
Amortization of prior service cost	—		—		—		17		17
Net pension benefit cost	$	669	$	316	$	10	$	39	$	1,034